On Wed, Jul 26, 2023 at 6:34 AM Jan Beulich <jbeul...@suse.com> wrote: > > Newer hardware offers more efficient and/or flexible and/or capable > instructions, some of which we can make good use of in the hypervisor > as well. Allow a basic way (no alternatives patching) of enabling their > use. Of course this means that hypervisors thus built won't work > anymore on older, less capable hardware. > > Since older compilers (apparently gcc10 / clang11 and older) won't > recognize -march=x86-64-v2 etc, also addd fallback logic passing > -mpopcnt and alike explicitly. > > Note that in efi_arch_cpu() the filling of 7c0 and 7d0 are forward- > looking; we only require 7b0, but we need to use cpuid_count() anyway. > > Signed-off-by: Jan Beulich <jbeul...@suse.com>
Reviewed-by: Jason Andryuk <jandr...@gmail.com> Thanks, Jason
